Update index.html

Fix

Author: Gmac4247

index.html

@@ -2603,9 +2603,8 @@ <h4>Archimedes and the Illusion of Limits</h4>
 <br>
 <p><strong>Euclid gives exact angle bisection as a geometric construction, but he provides no computational framework for evaluating the sine of the bisected angles.</strong> 
 <br><br>
-The angles 15°, 22.5°, 7.5°, and 3.75° can all be constructed with compass and straightedge, yet the numerical values of</p>
+The angles 22.5°, 7.5°, and 3.75° can all be constructed with compass and straightedge, yet the numerical values of</p>
 <ul style="margin:6px">
-     <li>sin(15°)</li>
 	<li>sin(22.5°)</li>
       <li>sin(7.5°)</li>
       <li>sin(3.75°)</li>
@@ -2675,7 +2674,6 @@ <h4>Archimedes and the Illusion of Limits</h4>
 <br>
 <p>Thus, when Archimedes computed</p>
 <ul style="margin:6px">
-      <li>sin(15°)</li>
       <li>sin(7.5°)</li>
       <li>sin(3.75°)</li>
 </ul>